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TM5-4120-387-14
TABLE 4-2. TROUBLESHOOTING (Cont.)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 8.
Check air flow out of conditioned air (evaporator) discharge
grille.
If air flow volume is low:
a.
Adjust conditioned air (evaporator) intake grille louvers.
b.
Clean and service or replace conditioned air filter element.
(See para 4-25. )
c.
Clean and service, or replace mist eliminator.
(See para
4-25.)
d.
Clean evaporator coil and entire evaporator system.
(See
para 4-61.)
Step 9.
Check operation of Temperature control thermostat (S1).
a.
Inspect sensing bulb and capillary for damage or leakage.
(See para 4-46.)
Replace entire control if bulb is damaged
or leaking.
b.
Test switch in Temperature control thermostat. (See para
4-46.) Replace entire control if defective.
6.
REDUCED HEATING CAPACITY.
Step 1.
Check that all doors, windows, and other openings in the room or
enclosure are tightly closed.
Tightly close all openings.
Step 2.
If control panel is remotely located, check to be sure that sensing
bulb is not near a light bulb or some type of heat producing
equipment.
Turn off or move heat source, or move the remote control panel.
Step 3.
Check operation of Temperature control thermostat.
Set control to fully INCREASE and fan speed
condition improves, adjust properly.
to HI SPEED then, if
4-45
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